BMW E3. 0/E3. 6 Air Bag Warning Light Reset . This warning lamp had dogged do- it- yourselfers for years. The lamp is like a little gremlin- -there apparently is no specific reason why or how it is activated- any number of seemingly harmless actions can set it off. The airbag lamps on all three of my E3. BMWs have been on at one time or another. Sometimes the light will stay lit, and then go out after about 3 minutes of driving. Sometimes it will blink and then stay lit. Sometimes it will stay on continuously from when you start the car. Either way, each of these occurrences indicates that the airbag computer (also known as the SRS, or Supplemental Restraint. System) has had a problem in the past. The SRS warning lamp is often triggered for relatively minor reasons that do not require any maintenance on the system. Any number of harmless acts can trigger the SRS lamp: Driving the car through a large puddle, or being exposed to lots of rain. A street light, light pole, lamppost, street lamp, light standard, or lamp standard is a raised source of light on the edge of a road or path. Modern lamps may also. Light CROSS BAR and Lamp CROSS BAR available at MyLampParts.com. We have the lamp parts you need. Call us today – 773-539-7910.Swapping steering wheels. Removing the gauge cluster to replace light bulbs. Aggressive and/or track driving. Accidentally disconnecting an SRS component while hooking up electrical accessories, like an alarm or stereo. Pulling a fuse for the SRS system while performing electrical troubleshooting. Bad seatbelt sensor in the belt receptacle (common failure)You can't clear the lamp by disconnecting the battery - it will stay on. You can take the car to your local BMW dealer, but they will charge you anywhere from $8. However, there is a new tool available for the home mechanic that allows you to troubleshoot and diagnose air bag problems. The R5/SRS scan and reset tool from Peake. Research (Figure 1) is very similar to the fuel injection code reader featured in our Pelican Technical. Article on Reading Fuel Injection Fault Codes. The tool plugs into the same socket and allows you to diagnose the problem with your airbag, and also to reset a that annoying lamp. The instructions are very simple - - just plug it in, read the codes, and then reset the lamp. Most of the time, the airbag error code will be relatively minor, particularly if you know what caused the error. For example, the airbag light went on after I removed the gauges from my E3. Many people have told me that the airbags will not deploy when the airbag lamp is illuminated. This is an area of much controversy, as I have also been told by more than a few people that their airbags did deploy when the light was on. From this non- specific evidence, I would hazard to guess that the airbag system does indeed continue working when the light is on. I will quote from BMW factory documents: 7. Bulletin 7. 2. 0. SRS system, 7. 1. Central Activation Module, and 6. SRS sensor wire harness repair kits. If you would like to see more technical articles like this one, please continue to support Pelican. Parts with all your parts needs. If you like what you see here, then please visit our online BMW catalog and help support the collection and creating of new and informative technical articles like this one. Your continued support directly affects the expansion and existence of this site and technical articles like this one. As always, if you have any questions or comments about this helpful article, please drop us a line. Street light - Wikipedia. A street light, light pole, lamppost, street lamp, light standard, or lamp standard is a raised source of light on the edge of a road or path. Modern lamps may also have light- sensitive photocells that activate automatically when light is or is not needed: dusk, dawn, or the onset of dark weather. This function in older lighting systems could have been performed with the aid of a solar dial. Many street light systems are being connected underground instead of wiring from one utility post to another. History. The earliest lamps required that a lamplighter tour the town at dusk, lighting each of the lamps. According to some sources, illumination was ordered in London in 1. Sir Henry Barton, Mayor of London though there is no firm evidence of this. Following the invention of lanterns with glass windows, which greatly improved the quantity of light, in 1. Paris took charge of installing lanterns in each city neighborhood. Still, in 1. 66. 2, it was a common practice for travelers to hire a lantern- bearer if they had to move at night through the dark, winding streets. Lantern bearers were still common in Paris until 1. In 1. 66. 7, under King Louis XIV, the royal government began installing lanterns on all the streets. There were three thousand in place by 1. Lanterns with glass windows were suspended from a cord over the middle of the street at a height of twenty feet and were placed twenty yards apart. A much- improved oil lantern, called a r. These lamps were attached to the top of lampposts; by 1. Paris streets. During the French Revolution (1. Gas lamp lighting. Stephen Hales was the first person who procured a flammable fluid from the actual distillation of coal in 1. John Clayton, in 1. In the early 1. 79. Cornwall, Murdoch began experimenting with various types of gas, finally settling on coal- gas as the most effective. He first lit his own house in Redruth, Cornwall in 1. The First gas lamps on the streets of Paris appeared in January 1. Carrousel and the rue de Rivoli, then on rue de la Paix, place Vend. A Parisian writer enthused in August, 1. Less than two years later, on December 3. Westminster Bridge was lit by gas. The use of gas lights in Rembrandt Peale's Museum in Baltimore in 1. Baltimore was the first American city with gas streetlights, provided by Peale's Gas Light Company of Baltimore. The first place outside London in England to have gas lighting, was Preston, Lancashire in 1. Preston Gaslight Company run by revolutionary Joseph Dunn, who found the most improved way of brighter gas lighting. Oil- gas appeared in the field as a rival of coal- gas guff. In 1. 81. 5, John Taylor patented an apparatus for the decomposition of . Public attention was attracted to . In Brest, street lighting with kerosene lamps reappeared in 2. Farola fernandina. Essentially it is a neo- classical French gas lamp style dating from the late 1. It may be either a wall- bracket or standard lamp. The standard base is cast metal with an escutchion bearing two intertwined letters 'F', the Royal cypher of King Ferdinand VII of Spain. This was a carbon arc lamp employing alternating current, which ensured that both electrodes were consumed at equal rates. In 1. 87. 6, the common council of the City of Los Angeles ordered four arc lights installed in various places in the fledgling town for street lighting. In 1. 88. 1, to coincide with the Paris International Exposition of Electricity, street lights were installed on the major boulevards. The first streets in London lit with the electrical arc lamp were by the Holborn Viaduct and the Thames Embankment in 1. More than 4,0. 00 were in use by 1. Friedrich von Hefner- Alteneck of Siemens & Halske. The United States was quick in adopting arc lighting, and by 1. US, commonly installed in exceptionally tall moonlight towers. Arc lights had two major disadvantages. First, they emit an intense and harsh light which, although useful at industrial sites like dockyards, was discomforting in ordinary city streets. Second, they are maintenance- intensive, as carbon electrodes burn away swiftly. With the development of cheap, reliable and bright incandescent light bulbs at the end of the 1. The first street to be lit by an incandescent lightbulb was Mosley Street, in Newcastle upon Tyne. The street was lit by Joseph Swan's incandescent lamp on 3 February 1. The first city in the United States, and second overall after Newcastle (England), was the Public Square road system in Cleveland, Ohio, on April 2. Wabash, Indiana holds the title of being the third electrically lit city in the world, which took place on February 2, 1. Four 3,0. 00 candlepower Brush arc lamps suspended over the courthouse rendered the town square . In 1. 88. 6, the tiny, isolated mining town of Waratah in NW Tasmania was the first to have electrically powered street lighting in Australia. On 9 December 1. 88. Brisbane, Queensland, Australia was introduced to electricity by having a demonstration of using eight arc lights, erected along Queen Street Mall. The power to supply these arc lights was taken from a 1. Crompton DC generator driven by a Robey steam engine in a small foundry in Adelaide Street and occupied by J. Sutton and Co. The lamps were erected on cast iron standards, 2. In 1. 88. 8 Tamworth, New South Wales, Australia became the first location in New South Wales to have electric street lighting, for which that city erroneously maintains the title of . They were often operated at high- voltage series circuits. Series circuits were popular since the higher voltage in these circuits produced more light per watt consumed. Furthermore, before the invention of photoelectric controls, a single switch or clock could control all the lights in an entire district. To avoid having the entire system go dark if a single lamp burned out, each street lamp was equipped with a device that ensured that the circuit would remain intact. Early series street lights were equipped with isolation transformers. Later the film cutout was invented. The film cutout was a small disk of insulating film that separated two contacts connected to the two wires leading to the lamp. If the lamp failed (an open circuit), the current through the string became zero, causing the voltage of the circuit (thousands of volts) to be imposed across the insulating film, penetrating it (see Ohm's law). In this way, the failed lamp was bypassed and power restored to the rest of the district. The street light circuit contained an automatic current regulator, preventing the current from increasing as lamps burned out, preserving the life of the remaining lamps. When the failed lamp was replaced, a new piece of film was installed, once again separating the contacts in the cutout. This system was recognizable by the large porcelain insulator separating the lamp and reflector from the mounting arm. This was necessary because the two contacts in the lamp's base may have operated at several thousand volts above ground/earth. Modern lights. However, white light sources have been shown to double driver peripheral vision and improve driver brake reaction time by at least 2. Studies comparing metal halide and high- pressure sodium lamps have shown that at equal photopic light levels, a street scene illuminated at night by a metal halide lighting system was reliably seen as brighter and safer than the same scene illuminated by a high pressure sodium system. In Australia, HPS lamp performance needs to be reduced by a minimum value of 7. In the UK, illuminances are reduced with higher values S/P ratio. However, there have been no formal specifications written around Photopic/Scotopic adjustments for different types of light sources, causing many municipalities and street departments to hold back on implementation of these new technologies until the standards are updated. Eastbourne in East Sussex UK is currently undergoing a project to see 6. LED and will be closely followed by Hastings in early 2. It is also one of the first cities in North America to use Smart City technology to control the lights. Dim. On. Off, a company based in Quebec City, was chosen as a Smart City partner for this project. Preliminary field tests show that some LED luminaires are energy- efficient and perform well in testing environments. This streetlight design thus reduces energy consumption as well as light pollution. Measurement. The cost- savings potential of using a new way to measure mesopic lighting scenarios is tremendous. As drivers emerge from an unlighted area into a pool of light from a street light their pupils quickly constrict to adjust to the brighter light, but as they leave the pool of light the dilation of their pupils to adjust to the dimmer light is much slower, so they are driving with impaired vision. As a person gets older the eye's recovery speed gets slower, so driving time and distance under impaired vision increases. Oncoming headlights are more visible against a black background than a grey one. The contrast creates greater awareness of the oncoming vehicle. Stray voltage is also a concern in many cities. Stray voltage can accidentally electrify lampposts and has the potential to injure or kill anyone who comes into contact with the post. The statement . The first is discomfort and glare. Because LED light is so concentrated and has high blue content, it can cause severe glare .. This can cause problems seeing clearly for safe driving or walking at night. Melatonin suppression is a marker of circadian disruption, which includes disrupted sleep. Street light stanchions (lampposts) pose a collision risk to motorists and pedestrians, particularly those affected by poor eyesight or under the influence of alcohol. This can be reduced by designing them to break away when hit (frangible or collapsible supports), protecting them by guardrails, or marking the lower portions to increase their visibility. High winds or accumulated metal fatigue also occasionally topple street lights.
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